Abstract
In this paper, we fix once and for all a field \(\mathbb {K}\). A ring (or an algebra) means an associative \(\mathbb {K}\)-algebra with unit, not necessarily commutative. It is suggestive to imagine the ring \(A\) as a ring of (polynomial) functions on a space which is an object of noncommutative, or “quantum,” geometry. Morphisms of spaces correspond to ring homomorphisms in the opposite direction. For \(A\) and \(B\) fixed, the set \({{\mathrm{Hom}}}_{\mathbb {K}{-}\mathrm {alg}}(A, B)\) is also called the set of \(B\)-points of the space defined by \(A\).
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Manin, Y.I. (2018). The Quantum Group \({{\mathrm{GL}}}_q(2)\). In: Quantum Groups and Noncommutative Geometry. CRM Short Courses. Springer, Cham. https://doi.org/10.1007/978-3-319-97987-8_2
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DOI: https://doi.org/10.1007/978-3-319-97987-8_2
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Publisher Name: Springer, Cham
Print ISBN: 978-3-319-97986-1
Online ISBN: 978-3-319-97987-8
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